Connected Air Filter Elements for Faster Bitumen Filter Replacement
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Solution Overview
Problem
The existing air filter arrangements for road pavers require a high level of effort and time to replace filter elements, leading to undesirable downtime on construction sites and a risk of incorrect installation, which can result in reduced filter effectiveness due to the complexity of handling individual filter elements.
Innovation Solution
A compact air filter arrangement where at least two filter elements are firmly connected to form a single unit, allowing for easier installation and removal, with the option to include a third pre-filter element, reducing the need for separate housing and enabling tool-free attachment to a fan unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual filter elements are arranged in series in a filter housing, then the filter unit can clean bitumen-containing volume flow in multiple stages, but the filter replacement process becomes complex and time-consuming
Solution Approach 1:
Multiple filter elements that were previously separate components are merged into a single integrated filter element. The patent describes a filter element comprising multiple filter stages (e.g., pre-filter, medium filter, fine filter) that are combined into one piece, eliminating the need to handle and replace multiple individual elements separately. This merging reduces replacement time while maintaining multi-stage filtration capability.
2Reliability
If multiple individual filter elements are arranged in series in a filter housing, then the filter unit can clean bitumen-containing volume flow in multiple stages, but the filter replacement process requires multiple work steps and tool-based assembly
Solution Approach 1:
The patent combines multiple filter stages into a single integrated filter element that can be installed and removed as one piece. This eliminates the need for complex assembly and disassembly operations involving multiple individual elements, making the replacement process simpler and more straightforward while preserving the multi-stage filtration function.
Solution Approach 2:
The filter elements are extracted from the complex filter housing structure and designed as a self-contained, integrated unit. This allows the filter element to be handled independently without requiring the filter housing to be opened or other components to be manipulated, significantly simplifying the replacement operation.
3Reliability
If multiple individual filter elements are handled separately, then each filter element can be optimized for specific filter stages, but the risk of incorrect installation increases
Solution Approach 1:
By merging multiple filter stages into a single integrated element, the patent eliminates the possibility of incorrect installation order. Each filter stage remains optimized for its specific function (pre-filter, medium filter, fine filter), but their fixed relative positions within the integrated element ensure they are always installed in the correct sequence, preventing installation errors.
Data Source
AI summary
The disclosure relates to an air filter arrangement for cleaning a bitumen-containing volume flow, comprising at least a first filter element and a second filter element, which are arranged as filter elements acting in succession for cleaning the bitumen-containing volume flow, wherein the first filter element and the second filter element are fixedly connected to one another. Furthermore, the disclosure relates to a method for carrying out an exchange of a plurality of filter elements.